Drilling-machine.



-PATBNTED FEB. 20, 1906.

F. W. CLOUGH. DRILLING MACHINE.

APPLIOATIQN FILED SEPT. 27, 1904.

3 SHEETS-SHEET 1.

PATENTED FEB. 20, 1906.

F. W. GLOUGH.

DRILLING MACHINE.

APPLICATION FILED SEPT. 27. 1904.

3 SHEETS-SHEET 2.

PATENTED FEB. 20, 1906.

T. W. CLOUGH.

DRILLING MACHINE.

APPLICATION FILED SEPT. 27,1904.

3 SHEBTSHSHEBT 3.

Tinian sTATns PATENT enrich,

FRANCIS WV. CLOUGH, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR TO NELSON C.NEWELL, OF SPRINGFIELD, MASSACHUSETTS.

DRlLLlNG-IVIACHINE.

Specification of Letters Patent.

Patented Feb. 20, 1906.

Application filed September 27, 1904. Serial No. 226,147.

T LZ/f whom, it may concern:

Be it known that I, FRANCIS W. CLoUGI-i, a citizen of the United Statesof America, residing at Springfield, in the county of Hampden and Stateof Massachusetts, have invented new and useful Improvements in Drilling-Machines, of which the following is a specification.

This invention relates to the manufacture of buttons, and has specialreference to improved means for drilling eyes in buttonblanks and inrouting out a channel between said eyes.

The object of the invention is to provide a machine adapted to this workin which the button may be drilled and said channel properly formedbetween the eyes on the face of the button-blank and the eyescountersunk on the other side of the blank by the use of two drills inaxial alinement and movable one toward the other, together with means tomove the button transversely of the axis of the drills to form thechannel between the eyes by means of one of the drills.

A further object of the invention is to improve the construction of themachine in several particulars, all as fully hereinafter set forth, butmore especially in the construction of the spindles and theiradjustments.

In the drawings which embody the preferred construction of theinvention, Figure 1 is a side elevation of a machine embodying thisinvention. Fig. 2 is a longitudinal, partly sectional, elevation showingthe spindle construction on a somewhat enlarged scale as compared withFig. 1` Fig. 3 is a plan view of the right-hand end of the machine shownin Fig. 1 with the spindle and its supports removed therefrom. Fig. 4 isan end elevation of the portion of the machine shown in Fig. 3. Figs. 5,6, 7, 8, and 9 show the relative positions and movements of the twoaxially-disposed drills in drilling two eyes through a button and inrouting out a channel between the contiguous ends of said eyes on oneside. Fig. 10 is a sectional view of a button after the drilling of theleyes and the formation of the channel between the ends thereof. Fig. 11is a perspective view and a sectional view of the preferred form ofdrill and routing-tool, the section being on the line of the perspectiveview.

Briey stated, the essential characteristics of this machine consist intwo spindles havof different diameters and having different`Athicknesses.

In carrying out my invention a suitable bed a is provided, on each endof which is mounted a head consisting of a casting having the bearingsl) thereon for two spindles c and d, which are located in the bearingsin axial alinement one with the other, the spindles being movable onetoward the other in the manner hereinafter described, but rotatable on afixed axis. The contiguous ends of these spindles are provided withsuitable chucks e, in which are mounted, respectively, the drills f andg, the drill f in the spindle c and the drill g in the spindle d.

The drill g is shown in Fig. Il in perspective and in section and is notonly a drill, but so constructed as to constitute a routing-tool aswell. The drill f is designed only to operate as a drill and countersinkand is provided with the shoulderj" at a proper distance from the pointthereof to perform the countersinking operation on the end of the eyelocated on the back side of the button.

The bed a is hollow and the drive-shaft 7L (which is also the main shaftof the machine) extends therethrough longitudinally, as shown in Figs. land 4. Within the bed a there are secured thereon two cams and 7e, whichare shown only in dotted lines in the drawings, and each is providedwith a suitably-disposed cam-groove and 7r,which is so arranged that bymeans of suitable connections, to be described, between these cams andthe spindles the latter may be moved toward and from each other at theproper time to drill the eyes through the button and to countersink therear ends thereof and rout out a channel between the eyes on the face ofthe button.

The spindles proper are mounted in the upper portions of the bearings b,as stated, and below the spindles in the same vertical plane IOObearings are provided in the standards of the bearings b for the shaftsc and d', through the medium of which endwise movement may be impartedto the spindles and the endwise adjustment of the latter eHected. Theseshafts are, by means of a collar fm and a depending arm 0, connecteddirectly with the cams and lc, there being a roller p on the lower endsof' these arms o to enter the cam-grooves j and c, respectively, thecollars my being of course rigidly secured to the shafts c d in anysuitable manner, as by a set-screw.

The rear ends of the spindles c and d and their actuating-shafts c deach extend somewhat beyond the end of the machine and are connectedtogether by a yoke q, which is connected to the ends of the spindles insuch manner as to permit the free rotation of the latter, the preferredmode of construction being that shownin section in Fig. 2, in which theyoke fits over the end of a pin 1, located axially on the end of theshaft, on which pin I is a nut s and a check-nut t, suitable washersbeing interposed on either side of the yoke, as shown. By means of thisconstruction all lost motion may be taken up, the spindle being at thesame time freely rotatable in the end of the yoke.

rl.`he lower end of the yoke slides freely over a screw threaded portionof the shaft (W, there being a check-nut i) on the side of the yoke, theshaft having a spline-groove therein, and a screw w extending into itfrom the lower side of the yoke to prevent the rotation of the shaft d.

By means of this construction it will be noted that the shafts c and dhaving once been adjusted re uire no further attention, all adjustmentso the spindle relative to the shaft endwise being effected by means ofthe check-nuts v on the threaded end of these actuating-shafts.

The spindles, in order that the drills may perform their work properlyand cut cleanly, ave to be run at a high rate of speed,and they arerotated by means of belts y, running over pulleys 3, mounted between thebearings l).

To properly support the spindles between the bearings against the draftof the belts y, there is mounted in each bearing a long sleeve 4, (seeFig. 2,) which extends entirely through each bearing and part waythrough the pulley 3 from each end thereof.

The spindle at that portion thereof lying within the pulley is providedwith a longitudinal slot 5, extending therethrough, and a pin 6 is assedtransversely through the pulley and Eetween the ends of the sleeves 4and through the slot 5 in the spindle, thereby connecting the latterwith the pulley. In this manner the pulley will rotate in a fixed planebetween the inner ends of the bearings b, and yet the spindles whilebeing rotated thereby may be moved endwise through the sleeves 4 withgreat facility, as the entire strain of the pulley is on the sleeves.

On the end of the main shaft h is a driving- -pulley 7, the belt ofwhich may lead to the same counter-shaft that drives the spindles or tosome other suitable shaft. The rotation of the spindles, preferably, isentirely independent of the shaft h, and the spindles may be rotated inany suitable manner which will give the drills the proper cutting speed.The button-blank 9 to be drilled is grasped between two jaws 10 and 12,which have a sliding movement toward and from one another in thebearing-blocks 13 and 14, which movement is imparted to the jaws bymeans of two elbow-levers 15 and 16, which are pivotally supported onscrews or bolts 17 and 18, all as clearly shown in Figs. 3 and 4.

The levers 15 and 16 extend toward each other between their axes andhave a toothed connection or engagement one with the other, as at 19,whereby when one of the levers is swung on its axis to move one of thejaws in one direction the opposite lever will move the opposite jaw inthe contrary direction. The lever 16 is the one which is actuated toopen and close the jaws 10 and 12, and this lever has an extension 20,from which a connecting-rod 21 extends toward and is pivotally connectedto an arm 22, secured to a tubular shaft 23, (see Fig. 3,) which extendstoward the end of the bed a, being properly supported in suitablebearings therein. On this shaft is a cam-arm 24, which bears on a cam 25on the shaft h, being held thereagainst by a suitable spring, as 26. Thecam-arm 24 is fast on the end of the tubular shaft 23. Thisbutton-holding mechanism is so timed relative to the movement of thespindles that the jaws 10 and 12 will open when the spindles are movedone away from the other after the holes have been drilled through thebutton-blank, and the operation being completed the jaws will closeagain to grasp a new button fed -thereto by any suitable means prior tothe movement of the spindles toward one another to drill the first holethrough the blank.

The jaws are opened by the cam,25 and against the resistance of thespring 26, which bears on the arm 24, and when the latter runs off thecam it is therefore the spring 26 which closes the jaws 10 and 12, thesecoming to a bearing on opposite sides of the button before the rolleronthe end of the cam-arm 24 comes to a bearing against the cam 25. Bymeans of this button-grasping construction buttons of differentdiameters may be inserted between the jaws, as required in the operationof the machine, the parts being so proportioned that when working on thesmallest buttons the end of the arm 24 will be just free from the cam 25at the time the jaws grip the button, and the cam is so proportionedthat the jaws will open wide IOO enough to permit the largest button tobeinserted between them.

The bearing-blocks 13 and 14 form part of or are rigidly attached to aslide 30, having endwise movement transversely of the spin-` dles in itssupport 31, which is secured to the bed a in any suitable manner, thescrews 17 and 18 entering this slide, to the end that the whole of thebutton-grasping mechanism may move with the slide transversely of thespindles. Movement is imparted to this slide 30 by means of a lever 32,pivoted on a screw or bolt 33, which enters the support 31, the upperend of this lever being provided with a slotl 34. Back of this slottedend of the lever 32 a block 35 is secured to the slide, in which blockis a vertically-disposed T-slot, in which is located the head of a bolt36, which extends outwardly through the slot 34 in the lever 32, thebolt being provided with a nut 37, whereby it may be secured at anypoint in the slot 34. The lower end of the lever 32 is, by an arm 38,connected with a lever 39, secured to the end of the shaft 40, whichextends through the tubular shaft 23, there being on its end whichextends beyond the end of the shaft 23 a cam-lever 41, which by a spring41a is held against a cam 42 on the shaft t, whereby oscillatorymovements may be imparted to the shaft 40 and the slide 30 thus moved inits support at the proper time to shift the button-grasping mechanismtransversely of the spindles.

The degree of movement of the slide 30 determines the distance betweenthe eyes of the button, and by varying the position of the bolt 36relative to the axis 33 of the lever 32 the distance between the eyes ofthe button may be changed. This movement of the slide 30, abovedescribed, is timed to take place when one eye has been drilled in thebutton and the drill f entirely withdrawn and the drill g partlywithdrawn, to the end that the button may have plowed therein betweenthe eye just drilled and the one to be drilled the channel 43, (shown inFig. 7 of the drawings the button being indicated by 9, the firstdrilled hole by 45, and the second by 46. After this transverse movementhas taken place, movement is imparted to the spindles in substantiallythe same sequence as when the hrst eyevwas drilled, whereupon thespindles are separated, the jaws opening to drop the button and theslide 30 returned to its original position.

Figs. 5, 6, 7, 8, and 9 illustrate the various movements of the spindlesc and d in the drilling operation, and it has not been thought necessaryto show in the drawings any development of the cam-grooves y" and c,whereby these movements are obtained which in their proper sequence areas follows: The button being introduced between the jaws and the latterhaving closed thereon, both drills f and g advance simultaneously onetoward the other, as shown in Fig. 5, the drill f forming thecountersink 47 at this time.

It will be observed that the drills do not quite come together at thecenter of the button, and for obvious reasons they cannot 'linishdrilling the eye at this point. Therefore, as shown in Fig. 6, the drillf is rst backed off and the drill g is advanced far enough to pierce thethin wall 49 left between the ends of the drills, as shown in Fig. 5.

The drill f now remains stationary, and the drill g retires half-way ofits movement to a position partly out of the button, whereupon thelatter is fed transversely and the channel between the two holes isrouted out, and during this transverse movement of the button the drillg produces one of the rounded edges 50 on the web between the two eyes,as plainly shown in Fig. 7 of the drawings, the other rounded edge ofthe web being formed by the next slight advance movement of the drill g.At this point it will be observed that when the transverse movement ofthe button is completed and the channel between the two eyes or holesrouted out the drill g advances but slightly, as shown in Fig. 8, whichslight advance movement of the drill is only enough to round the bridgebetween the eyes, whereupon the drill g retires and the drill f advancesto finish the second eye or hole and form the countersink.

During the second forward movement of the drill g the drill f is againadvanced, the nearest point of approach between the drills being shownin Fig. 8, which position being reached the drill g is backed off andthe drill f advanced still farther, whereby the thin partition of stockwhich remains between the drills is in this instance bored out by thedrill f, which at the same time countersinks the rear end of the secondeye 46, as shown in Figs. 9 and 10. This completes the operation on thebutton, and the jaws 10 are now separated and the slide 30 moved againto the position from which it started when the eye 45 was drilled, theseoperations being repeated for each button.

Preferably the drills are made as shown in Fig. 11, although this is notessential; but it is found in practice that as far as the drill g isconcerned the routing operation by which the channel 43 is formed is cutmore cleanly and quickly with a drill such as shown in said Fig. 11.

Having thus described my invention, what I claim, and desire to secureby Letters Patent of the United States, is-- 1. In a button-drillingmachine, a drill and a router in axial alinement, a work-holder arrangedbetween said tools, and transversely movable from one position toanother, means for intermittently advancing the drill and retracting thesame, means for advancing and retracting the router, in unison with thedrill, and for maintaining it in partially-advanced IOO IIO

position while the drill is retracted, thenv again advancing the routerin unison'with the drill and retracting it to its full extent, andsuitable driving mechanism for the drill and router.

2. In a button-drilling machine, two drills in axial alinement andmovable toward and from each other, a work-holder, drill-controllingmechanism comprising means for causing both drills to first move towardeach other in the operation of forming each eye in the button and thencausing one drill to advance and the other retire in the operationofcompleting each eye, and means for effecting an automatic movement ofthe Work-holder transversely of the axis of the drills while one of thesame is in its retired position and the other partly advanced within theplane ofthe button said movement serving to rout out a channel betweenthe eyes by the latter drill.

3. In a machine ofthe character described,

FRANCIS w. oLoUGH.

Witnesses:

K. I. CLEMoNs, WM. H. CHAPIN.

